There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Through your logical capabilities, can you make 7 an even?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

Take one out and scratch my head, I am now black but once was red. What am I?

Which flower has two lips?

What does this simple rebus mean?

What kind of tree can you carry in your hand?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?